如何用PHP将表单变量传递至邮件模板？

Hey there! Let's walk through how to pass your form variables into an email template in your postit.php file. Here's a step-by-step solution tailored to your existing setup:

Step 1: Retrieve and Sanitize Form Data #

First, grab the values submitted via POST from your form, and add basic sanitization/validation to avoid issues like empty submissions or malicious content:

// Get and clean up form inputs
$dear = isset($_POST['Dear__1']) ? trim($_POST['Dear__1']) : '';
$fullName = isset($_POST['Full_Name__2']) ? trim($_POST['Full_Name__2']) : '';
$billingAddress = isset($_POST['Billing_Address__3']) ? trim($_POST['Billing_Address__3']) : '';

// Backend validation (critical even with frontend checks)
if (empty($fullName) || empty($billingAddress)) {
    die("Please fill in all required fields.");
}

// Escape special characters if using HTML emails to prevent injection
$dear = htmlspecialchars($dear, ENT_QUOTES, 'UTF-8');
$fullName = htmlspecialchars($fullName, ENT_QUOTES, 'UTF-8');
$billingAddress = htmlspecialchars($billingAddress, ENT_QUOTES, 'UTF-8');

Step 2: Build Your Email Template #

Use PHP's HEREDOC syntax to create a clean, readable template—this lets you format content naturally without escaping quotes:

// Plain text email template (simple and reliable)
$emailContent = <<<TEXT
Hello,

You've received a new order submission with these details:

- Salutation: $dear
- Full Name: $fullName
- Billing Address:
$billingAddress

Best regards,
Your Website Team
TEXT;

// OR, if you want a styled HTML email:
$emailContent = <<<HTML
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
</head>
<body>
    <p>Hello,</p>
    <p>You've received a new order submission:</p>
    <ul>
        <li><strong>Salutation:</strong> $dear</li>
        <li><strong>Full Name:</strong> $fullName</li>
        <li><strong>Billing Address:</strong><br>$billingAddress</li>
    </ul>
    <p>Best regards,<br>Your Website Team</p>
</body>
</html>
HTML;

Step 3: Configure Headers and Send the Email #

Finish setting up email parameters and send it using PHP's mail() function (for more reliability, you could use libraries like PHPMailer, but this works for basic use cases):

$to = 'My@email.com';
$subject = 'New Order Submission';

// Set headers to ensure proper encoding and sender identity
$headers = "From: Your Website <noreply@yourdomain.com>\r\n";
// Swap to text/plain if using the plain text template
$headers .= "Content-Type: text/html; charset=UTF-8\r\n";

// Send the email
if (mail($to, $subject, $emailContent, $headers)) {
    echo "Thank you! Your order has been submitted successfully.";
} else {
    echo "Oops, something went wrong. Please try submitting your order again later.";
}

Key Tips to Keep in Mind #

• Character Encoding: Always include charset=UTF-8 in headers to avoid garbled text for non-English characters.
• Security: Sanitize user inputs to prevent email injection attacks, especially if using HTML emails.
• Validation: Never rely solely on frontend validation—backend checks ensure you don't process empty or invalid data.

内容的提问来源于stack exchange，提问作者Mango